Diving back into reporting, Kara welcomes a new cub reporter to CatCo. Meanwhile, James and Lena argue about James' impending indictment for acting as the vigilante Guardian, while Alex and Brainy struggle to get in sync at the DEO. Supergirl is called into action when remnants of the anti-alien terrorist organization Cadmus try to assassinate pro-alien leaders, but their endgame turns out to be much more sinister than she expected. J'onn relishes his peaceful new life, but an outing with an old friend causes him concern.
- Lillian quips that her heart has "grown several sizes" in prison, to which Lena calls her "the Grinch Who Stole Christmas", referencing the protagonist of the Dr. Seuss book How the Grinch Stole Christmas!.
- Lillian mentions Bruno Mannheim as a former associate of Lex. In the comics, Bruno "Ugly" Mannheim was the leader of Intergang and an enemy of Superman.
- Lena claims to District Attorney Diaz that the new evidence against Bruno will put the latter behind bars for as long as Al Capone, a notorious American gangster who was sentenced to 11 years in prison for tax evasion.
|Supergirl season 4|
|"" • "" • "" • """ • "|
|"" • "" • "" • "" • ""|